Which letter is not used as a symbol of chemical element?

N
O
P
R
N is the chemical symbol of ni­tro­gen, O - oxygen, P - phos­pho­rus.

Answers distribution

N
O
P
R
answers
flagUnknown
3%
3%
5%
87%
564
flagPoland
4%
5%
5%
84%
6344
flagNorway
3%
7%
3%
84%
26
flagIndia
1%
8%
6%
82%
167
flagMalaysia
5%
5%
0%
82%
17
flagPakistan
0%
6%
13%
80%
30
flagCanada
3%
0%
15%
80%
26
flagAustralia
8%
4%
8%
79%
24
flagSweden
16%
0%
5%
77%
18
flagthe United States
6%
9%
7%
76%
272
flagthe Netherlands
0%
0%
23%
76%
21
flagthe United Kingdom
5%
8%
8%
75%
221
flagSingapore
10%
10%
5%
75%
20
flagItaly
0%
18%
9%
72%
11
flagthe Philippines
11%
3%
7%
70%
27
flagthe United Arab Emirates
13%
13%
6%
66%
15
flagNigeria
0%
5%
15%
63%
19
flagGermany
8%
16%
16%
59%
49
flagRepublic of Ireland
26%
21%
0%
52%
19
flagFinland
36%
5%
10%
47%
19

Gender

men85%
women83%
N
3%
4%
O
4%
6%
P
6%
5%
R
85%
83%

Language versions

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answers
results
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Which letter is not used as a symbol of chemical element?
833
78%

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Illustration: Bri Weldon
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